CN102105928B - Data processing apparatus, liquid crystal display apparatus, television receiver, and data processing method - Google Patents
Data processing apparatus, liquid crystal display apparatus, television receiver, and data processing method Download PDFInfo
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- CN102105928B CN102105928B CN200980129303.0A CN200980129303A CN102105928B CN 102105928 B CN102105928 B CN 102105928B CN 200980129303 A CN200980129303 A CN 200980129303A CN 102105928 B CN102105928 B CN 102105928B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2007—Display of intermediate tones
- G09G3/2011—Display of intermediate tones by amplitude modulation
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3614—Control of polarity reversal in general
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0202—Addressing of scan or signal lines
- G09G2310/0218—Addressing of scan or signal lines with collection of electrodes in groups for n-dimensional addressing
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0242—Compensation of deficiencies in the appearance of colours
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0285—Improving the quality of display appearance using tables for spatial correction of display data
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
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- Crystallography & Structural Chemistry (AREA)
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Abstract
This invention aims to reduce display irregularity caused by the influence of a coupling that occurs between a first pixel that displays a green component and a data signal line that drives a second pixel. According to the invention, an independent gamma correcting unit (21) is provided. The independent gamma correcting unit acquires a pixel data of the second pixel that displays a blue or red component and that is driven by the data signal line adjacent to the first pixel that displays the green component. When a gray scale value indicated by the pixel data of the second pixel is between zero and a first value established in advance, the independent gamma correcting unit corrects the gray scale value to the first value.
Description
Technical field
The present invention relates to proofread and correct data processing equipment and liquid crystal indicator to the picture signal of inputting from the outside by the liquid crystal indicator that liquid crystal applied voltages is carried out the image demonstration.
Background technology
Liquid crystal indicator be have high-resolution, slim, quality is light and the flat display apparatus of the advantage such as low consumpting power, in recent years, along with the raising of the raising of display performance, productive capacity and with respect to the raising of the price competitiveness of other display device, market scale just sharply enlarges.
Therefore in liquid crystal indicator, element can occur agingly when liquid crystal layer is continuously applied DC voltage for a long time, for long lifetime, need to make the interchange of executing the ground upset of alive polar cycle drive (upset driving).
Yet, in active array type LCD, in the situation that the frame upset type of drive that every 1 frame of employing overturns and drives, (thin film transistor: how many generating positive and negative voltages that the change of the pixel current potential that grid thin film transistor (TFT)) and the stray capacitance between source electrode cause, the various factorss such as skew of the central value of opposite electrode signal can cause being applied to liquid crystal understands some imbalance, and this is inevitable for the anisotropy of liquid crystal specific inductive capacity, pixel TFT.Its result has such problem: can produce small luminance fluctuation at half frequency place of frame rate, and visual identity is the flash of light that is called flicker.In order to prevent such problem, except the upset of adopting every 1 frame, generally also adopt between adjacent lines or neighbor chien shih picture element signal becomes the upset type of drive of reversed polarity.
At this, in the situation that carry out making take pixel as unit the point upset of polarity upset, the problem that exists the signal delay of data signal line can cause the charge rate of pixel to reduce.In order to suppress this problem, proposed to make by every a plurality of horizontal period (every a plurality of row) type of drive of the polarity upset of voltage data signal.This type of drive of carrying out polarity upset by every a plurality of horizontal period roughly is divided into piece upset type of drive and multi-thread upset type of drive.Piece upset type of drive is that gate line is divided into a plurality of, carries out respectively interleaved mode by each piece.Multi-thread upset type of drive is that scan mode adopts sequential scan mode and often carries out the mode that multi-thread scanning just makes polarity upset.
The prior art document
Patent documentation
Patent documentation 1: Japan's publication communique " JP 2002-108312 communique (open day: on April 10th, 2002) "
Summary of the invention
The problem that invention will solve
In the variation of the effective value that for example adopts drain voltage as shown in the coordinate diagram of Figure 14, with in the liquid crystal indicator of 48 lines as the piece upset type of drive of 1, in the situation (green intermediate grey scales evenly shows) of coming display frame integral body as the certain gray level that belongs to intermediate grey scales of the same colour with green, as shown in figure 12, produce sometimes the horizontal stripe of 48 distance between centers of tracks.As the reason that this horizontal stripe produces, can enumerate the coupling that produces between pixel in the liquid crystal panel that liquid crystal indicator possesses and source electrode line.Consider following situation: as shown in figure 13, in liquid crystal panel, green pixel G, blue pixel B and the source electrode line S corresponding with pixel G
GWith the source electrode line S corresponding with pixel B
BAccording to source electrode line S
G, green pixel G, source electrode line S
BAnd the arranged in order of blue pixel B.
In this situation, the capacitor C pix of green pixel G is capacitor C pix ', the stray capacitance Csd of green pixel self
FromAnd stray capacitance Csd
HeSum.At this, stray capacitance Csd
FromThe capacitor C pix ' and source electrode line S by green pixel self
GBetween coupling and the stray capacitance that produces.In addition, stray capacitance Csd
HeThe capacitor C pix ' and source electrode line S by green pixel self
BBetween coupling and the stray capacitance that produces.Owing to producing these stray capacitances, therefore when the voltage level of the source signal voltage of source electrode line changed, the drain voltage of TFT also can change.
Figure 14 means the coordinate diagram that the effective value of the drain voltage of the situation of carrying out the even demonstration of green intermediate grey scales in piece upset type of drive changes by every line.In same shown in the drawings upset type of drive, carry out polarity upset by every 50 horizontal period, carry out the driving of the amount of 48 lines in these 50 horizontal period.That is, the amount of 2 horizontal period is interregnums, and every 48 lines arrange the interregnum of 2 horizontal period.
In the piece upset type of drive of variation as shown in the coordinate diagram of Figure 14 of the effective value of drain voltage, be repeated below action: write odd-numbered line from 1 line to 95 lines, then carry out polarity upset and write even number line from 50 lines to 144 lines, then carry out polarity upset and write odd-numbered line.Thus, be at 48 toe-in bundles to 1 write, be 1 and the scanning of the scanning of odd-numbered line and even number line is 96 lines.
In the situation that carry out this driving, owing to each line being carried out the difference of the timing of gate turn-on, be subject to reversed polarity source signal voltage impact during also different.Thus, the effective value of drain voltage is different in each line.
Therefore, along with the variation of the effective value of drain voltage shown in Figure 14, brightness reduces at leisure between 48 lines this cyclic periodicity ground repeats.Because the brightness of this every 48 lines reduces, and produce the horizontal stripe of every 48 lines.In addition, this horizontal stripe is in the situation that carry out that red intermediate grey scales evenly shows and blue intermediate grey scales evenly shows and can produce equally, with regard to visual characteristic, green intermediate grey scales evenly in demonstration horizontal stripe the most eye-catching.
In addition, in frame that every 1 frame overturns upset type of drive with drive the mode of full frame with staggered scanning in, due to above-mentioned same mechanism, also can produce the reduction of brightness in 1 frame, therefore have from the upside of display frame to produce the problem of brightness gradual change to downside.In addition, in multi-thread upset type of drive, due to above-mentioned same mechanism, also can produce every multi-thread brightness and reduce, therefore can produce every multi-thread horizontal stripe.
In above-mentioned patent documentation 1, the driving circuit of the liquid crystal indicator that possesses the voltage level variable cell is disclosed, described voltage level variable cell is used for making from the voltage level of the source signal voltage of source electrode driver output and is shifted.Yet, the open technology that source signal voltage is changed for the generation that is suppressed at the horizontal stripe that as described above upset type of drive etc. produce.
The present invention completes in view of above-mentioned existing problem, the intermediate grey scales of the demonstration of horizontal stripe etc. with regard to visual characteristic the most eye-catching inhomogeneous green composition is provided equably even its purpose is to provide, also can makes liquid crystal panel not show the data processing equipment of inhomogeneous uniform demonstration with simple structure.
For the scheme of dealing with problems
in order to address the above problem, data processing equipment of the present invention is the data processing equipment of image signal correction, described picture signal comprises a plurality of pixel datas of the liquid crystal panel of active array type being inputted from the outside, the liquid crystal panel of described active array type possesses a plurality of scan signal lines that extend in a direction, a plurality of data signal lines that extend in another direction and a plurality of pixels that arrange accordingly with the cross part of said scanning signals line and above-mentioned data signal line, above-mentioned data processing equipment is to possess the structure of proofreading and correct handling part, described correction handling part obtains and is driven by the data signal line adjacent with the 1st pixel of the demonstration of carrying out green composition, carry out the pixel data of the 2nd pixel of the demonstration of blue composition or red composition, in the situation that the represented gray-scale value of the pixel data of above-mentioned the 2nd pixel is from 0 to the value the 1st value of regulation, this gray-scale value is corrected into above-mentioned the 1st value.
in addition, data processing method of the present invention is the data processing method of image signal correction, described picture signal comprises a plurality of pixel datas of the liquid crystal panel of active array type being inputted from the outside, the liquid crystal panel of described active array type possesses a plurality of scan signal lines that extend in a direction, a plurality of data signal lines that extend in another direction and a plurality of pixels that arrange accordingly with the cross part of said scanning signals line and above-mentioned data signal line, above-mentioned data processing method is the method with following steps: obtain and driven by the data signal line adjacent with the 1st pixel of the demonstration of carrying out green composition, carry out the step of pixel data of the 2nd pixel of the demonstration of blue composition or red composition, and in the situation that the represented gray-scale value of the pixel data of above-mentioned the 2nd pixel is from 0 to the value the 1st value of regulation, this gray-scale value is corrected into the step of above-mentioned the 1st value.
In the above description, the 1st pixel, the data signal line that drives the 2nd pixel and the 2nd pixel are according to this order and row arrangement.In this situation, the driving of the 1st pixel can be subject to and drive the impact of the coupling that produces between the data signal line of the 2nd pixel.Due to the impact of this coupling, in the situation that show equably the intermediate grey scales of green composition, can produce according to the difference of display position the demonstration that brightness changes at leisure inhomogeneous.
On the other hand, according to said structure or method, in the situation that the represented gray-scale value of the pixel data of the 2nd pixel is that this gray-scale value is corrected into the 1st value from 0 to the value the 1st value of regulation.In this situation, the difference of the 1st pixel when showing equably the intermediate grey scales of green composition and the gray-scale value of the 2nd pixel diminishes.Therefore, can reduce the 1st pixel and to drive the above-mentioned demonstration that the impact of the coupling that produces between the data signal line of the 2nd pixel produces inhomogeneous.
In addition, it is extremely simply to process that correction as described above is processed, and therefore can be used in the structure of proofreading and correct processing and become simple.
That is, even in the situation that show that equably with regard to visual characteristic horizontal stripe etc. shows the intermediate grey scales of the most eye-catching inhomogeneous green composition, also can make liquid crystal panel not show inhomogeneous uniform demonstration with simple structure.
In addition, data processing equipment of the present invention also can adopt following structure: in said structure, above-mentioned correction handling part is that the independent gamma that carries out the gamma correction that the pixel data to each included colour content of above-mentioned picture signal carries out is respectively independently proofreaied and correct handling part.
According to said structure, can compensate reliably respectively voltage that liquid crystal layer is applied and the wavelength dependency that concerns the aspect of optical transmission rate to each colour content, therefore can improve display quality.In addition, utilize this independent gamma to proofread and correct handling part and carry out the correction of the gray-scale value of above-mentioned the 2nd pixel, therefore can enough identical structures realize that gamma correction is processed and the correction of the 2nd pixel is processed.Thus, simplification that can implement device.
In addition, data processing equipment of the present invention also can adopt following structure: in said structure, also possesses the correcting value storage part, above-mentioned correcting value storage part is preserved the correcting value data corresponding with the combination of the value of the pixel data of above-mentioned each colour content and the value after gamma correction, and above-mentioned correction handling part is proofreaied and correct by the above-mentioned correcting value storage part of reference.
According to said structure, possess the correcting value storage part, above-mentioned correcting value storage part is preserved the correcting value data corresponding with the combination of the value of the pixel data of above-mentioned each colour content and the value after gamma correction.Thus, by proofreading and correct with reference to this correcting value storage part, can proofread and correct simply processing.
In addition, also can consider to be undertaken by computing the structure of correction as described above, but the structure of proofreading and correct with reference to the correcting value data of correcting value storage part is simple structure and can high speed processing.
In addition, liquid crystal indicator of the present invention is following structure: possess: the liquid crystal panel of active array type, a plurality of data signal lines that it possesses a plurality of scan signal lines of extending in direction, extend in another direction and a plurality of pixels that arrange accordingly with the cross part of said scanning signals line and above-mentioned data signal line; The sweep signal drive division, its gate turn-on pulse that will make the said scanning signals line be in selection mode is applied to the said scanning signals line successively; The data-signal drive division, it is to be applied to above-mentioned data signal line with the mode of polarity upset with data-signal by a plurality of horizontal period of the every regulation in 1 image duration; And the data processing equipment of the invention described above.
According to said structure, can be reduced in the 1st pixel and drive the inhomogeneous correction of above-mentioned demonstration that the impact of the coupling that produces between the data signal line of the 2nd pixel produces, therefore even in the situation that show equably the intermediate grey scales of special color composition, also can not show inhomogeneous uniform demonstration.
In addition, liquid crystal indicator of the present invention also can adopt following structure: in said structure, also possesses display control circuit, above-mentioned display control circuit receives the picture signal that comprises from a plurality of pixel datas of outside input, the signal and the picture signal that will supply with above-mentioned data-signal drive division of the action of said scanning signals drive division and above-mentioned data-signal drive division controlled in output, and above-mentioned data processing equipment is that above-mentioned display control circuit possesses.
Usually, in the display control circuit as described above that liquid crystal indicator possesses, can carry out processing such as corrections such as gamma corrections to picture signal.Thus, when carrying out this correction processing, can carry out simultaneously the correction to the gray-scale value of above-mentioned the 2nd pixel.That is, according to said structure, the structure to the correction of the gray-scale value of above-mentioned the 2nd pixel can be need not newly to be provided for, installation cost can be reduced.
In addition, liquid crystal indicator of the present invention also can adopt following structure: in said structure, above-mentioned data-signal drive division carries out polarity upset and drives, and with side's polarity continue during be made as a plurality of horizontal scan period.
According to said structure, carry out polarity and drive at the polarity upset that a plurality of horizontal scan period continue, the difference of therefore carrying out the timing of gate turn-on according to each scan signal line, be subject to reversed polarity source signal voltage impact during also different.Thus, the impact that coupling produces is different in each scan signal line, can produce show inhomogeneous.That is, even for this structure, also can not show inhomogeneous uniform demonstration.
in addition, liquid crystal indicator of the present invention also can adopt following structure: in said structure, the said scanning signals line is divided into the piece more than 1, and the included scan signal line of each piece is further divided into a plurality of groups, the said scanning signals drive division is take above-mentioned as unit sequence scanning said scanning signals line, and in the scanning of each piece, by carrying out that successively the driving of interlace mode is carried out in each scanning of organizing of said scanning signals line, above-mentioned data-signal drive division is applied to above-mentioned data signal line in the mode of the polarity upset of naming a person for a particular job in the switching time of the group of the said scanning signals line that scans with data-signal.
According to said structure, in the situation that interlace mode, the voltage that is applied to pixel during demonstration carries out polarity upset by every 1 row, therefore compares with sequential scan mode, flicker can be reduced, inhomogeneous that the coupling capacitance of up and down pixel produces can also be reduced in addition.Owing to can suppressing the problems referred to above, be easy to make the length in the polarity upset cycle in staggered scanning to be longer than the length in the polarity upset cycle of sequential scan mode, so be easy to suppress the reduction of consumed power and the heating of data-signal drive division.
In addition, liquid crystal indicator of the present invention also can adopt following structure: in said structure, the quantity of cutting apart the piece of said scanning signals line is one.
Therefore according to said structure, the row that carries out polarity upset is the distolateral of picture, can make inhomogeneously to become not eye-catching.
In addition, liquid crystal indicator of the present invention also can adopt following structure: in said structure, the quantity of cutting apart the piece of said scanning signals line is more than two.
According to said structure, scan signal line is divided into a plurality of, carries out the driving of interlace mode take each piece as unit.In this situation, carry out the situation of the driving of interlace mode with scan signal line integral body and compare, the scanning difference regularly between the group in each piece is diminished.Thus, can suppress the generation of broach line described later (コ one ミ Application グ), therefore can make display quality become better.
In addition, liquid crystal indicator of the present invention also can adopt following structure: in said structure, the said scanning signals line is divided into the piece more than 1, the said scanning signals drive division carries out the driving of sequential scan mode to the said scanning signals line, above-mentioned data-signal drive division is applied to above-mentioned data signal line in the mode of the polarity upset of naming a person for a particular job in the switching time of the group of the said scanning signals line that scans with data-signal.
According to said structure, drive by sequential scan mode, therefore can save the hand-off process of taking turns of the required picture signal of staggered scanning etc.
In addition, liquid crystal indicator of the present invention also can adopt following structure: in said structure, the quantity of cutting apart the piece of said scanning signals line is one.
According to said structure, can realize by the driving of each data signal line with the polarity upset of data-signal.Therefore in addition, the row that carries out polarity upset is the distolateral of picture, can make inhomogeneously to become not eye-catching.The heating that in addition, can more effectively realize reducing consumed power and suppress the data-signal drive division.
In addition, liquid crystal indicator of the present invention also can adopt following structure: in said structure, the quantity of cutting apart the piece of said scanning signals line is more than two.
According to said structure, can suppress to be called the generation of the flash of light of flicker.
In addition, also can consist of the television receiver that possesses liquid crystal indicator of the present invention and receive the tuning section that televises.
The invention effect
Data processing equipment of the present invention as mentioned above, to possess the structure of proofreading and correct handling part, that described correction handling part obtains is that drive by the data signal line adjacent with the 1st pixel of the demonstration of carrying out green composition, the pixel data of the 2nd pixel of demonstration that carry out blue composition or red composition, in the situation that by the represented gray-scale value of the pixel data of above-mentioned the 2nd pixel be 0 to the regulation the 1st value value, this gray-scale value is corrected to above-mentioned the 1st value.Thus, bring into play following effect: even in the situation that show equably the intermediate grey scales of the demonstration of horizontal stripe etc. with regard to visual characteristic the most eye-catching inhomogeneous green composition, also can make liquid crystal panel not show inhomogeneous uniform demonstration with simple structure.
Description of drawings
Fig. 1 is the block diagram that represents together with the equivalent electrical circuit of the structure of the liquid crystal indicator of an embodiment of the invention and its display part.
Fig. 2 means the circuit diagram of the pixel forming portion of display part.
Fig. 3 (a) means the sequential chart of the variation of the drain voltage that the variation of the signal voltage of each source electrode line in piece upset type of drive causes, (b) mean the same polarity that relates to the 1st row and the 95th row during and reversed polarity during table.
Fig. 4 means the V-T performance plot of the relation of gray-scale voltage and transmissivity.
Fig. 5 means the block diagram of the Sketch of independent gamma correction handling part.
Fig. 6 means the sequential chart of the variation of the drain voltage that the variation of the signal voltage of each source electrode line in frame upset type of drive causes.
Fig. 7 means the coordinate diagram that the effective voltage reduction amount of drain voltage in frame upset type of drive changes by every line.
Fig. 8 means the figure that produces gradual change in the picture that green intermediate grey scales completely shows.
Fig. 9 means the sequential chart of the variation of the drain voltage that the variation of the signal voltage of each source electrode line in multi-thread upset type of drive causes.
Figure 10 means the coordinate diagram that the effective voltage reduction amount of drain voltage in multi-thread upset type of drive changes by every line.
Figure 11 means the figure that produces the horizontal stripe of 10 distance between centers of tracks in the picture that green intermediate grey scales completely shows.
Figure 12 means the figure that produces the horizontal stripe of 48 distance between centers of tracks in the picture that green intermediate grey scales completely shows.
Figure 13 means the block diagram of the stray capacitance in liquid crystal panel.
Figure 14 means the coordinate diagram that the effective voltage reduction amount of drain voltage in piece upset type of drive changes by every line.
Figure 15 means the independent gamma figure of the concrete example of LUT.
Figure 16 means the independent gamma figure of the concrete example of LUT.
Figure 17 means the block diagram of structure of the display device of TV receiver.
Figure 18 means the block diagram of the annexation of tuning and display device.
The exploded perspective view of one example of the physical construction when Figure 19 means display device as television receiver.
Embodiment
Based on description of drawings an embodiment of the invention, the contents are as follows.
(structure of liquid crystal indicator)
Fig. 1 is the block diagram that represents together with the equivalent electrical circuit of the structure of the liquid crystal indicator of present embodiment and its display part.This liquid crystal indicator possesses: as the source electrode driver 300 of data signal wire driving circuit; Gate drivers 400 as scan signal line drive circuit; The display part 100 of active matrix shape; Backlight 600 as planar illuminating device; Drive the light source driving circuit 700 of this backlight; And the display control circuit 200 that is used for controlling source electrode driver 300, gate drivers 400 and light source driving circuit 700.In addition, in the present embodiment, display part 100 is to realize as the liquid crystal panel of active array type, consists of liquid crystal panel but can be also that display part 100 is integrated together with source electrode driver 300 and gate drivers 400.
The display part 100 of above-mentioned liquid crystal indicator comprises: as the gate lines G L1 of a plurality of (m) scan signal line～GLm; Source electrode line SL1～SLn as a plurality of (n) data signal line that intersects respectively with these gate lines G L1～GLm; And distinguish with the point of crossing of these gate lines G L1～GLm and source electrode line SL1～SLn a plurality of (m * n) the pixel forming portion 20 that arranges accordingly.These pixel forming portions 20 configure rectangularly, consist of pel array.Below, the gate line direction arranged side by side of pel array is called line direction, the source electrode line direction is called column direction.
Each pixel forming portion 20 comprises: as the TFT10 of on-off element, its gate terminal connects with gate lines G Lj by corresponding point of crossing, and source terminal is connected with source electrode line SLi by this point of crossing; Pixel electrode, it is connected with the drain terminal of this TFT10; As the common electrode Ec of opposite electrode, it is arranged to share in above-mentioned a plurality of pixel forming portions 20; And liquid crystal layer, that it is arranged to share in above-mentioned a plurality of pixel forming portions 20 and be clamped between pixel electrode and common electrode Ec.And, consist of pixel capacitance Cpix ' by the liquid crystal capacitance that forms by pixel electrode and common electrode Ec.In addition, usually in order to keep reliably voltage in pixel capacitance, with liquid crystal capacitance, auxiliary capacitor (maintenance electric capacity) is set side by side, but auxiliary capacitor and present embodiment do not have direct relation, therefore the description thereof will be omitted and diagram.
To the pixel electrode in each pixel forming portion 20, by source electrode driver 300 and gate drivers 400, apply the current potential corresponding with the image that will show, to common electrode Ec never illustrated power circuit apply regulation current potential Vcom.Thus, the voltage corresponding with the potential difference (PD) between pixel electrode and common electrode Ec is applied to liquid crystal, controls light to the transit dose of liquid crystal layer by applying this voltage, carries out thus image and shows.
In addition, in the present embodiment, suppose it is the liquid crystal indicator of vertical orientation mode (VA (VerticalAlignment) mode).In the liquid crystal indicator of VA mode, be filled between substrate liquid crystal do not execute be orientated under alive state substantially vertical with real estate.Under this state, the polarisation of light face of injecting liquid crystal indicator rotates in liquid crystal layer hardly.On the other hand, when applying voltage, liquid crystal according to magnitude of voltage to be orientated from the state of the direction vertical with real estate with certain angle.Under this state, the polarisation of light face of injecting liquid crystal indicator rotates in liquid crystal layer.Therefore, the relation that is configured to the mutual orthogonal thereto Niccol of its polarizing axis at two polarization plates of the light incident side of liquid crystal indicator and light exit side configuration realizes thus showing darkly when not applying voltage and be normal black demonstration of white demonstration when applying voltage.
But, the invention is not restricted to the liquid crystal indicator of this VA mode, (Twisted Nematic: twisted nematic) liquid crystal indicator of mode also can be used for TN.In addition, be not limited to normal black the demonstration, also can be applied to normal white the demonstration.
in more detail, digital video signal Dv is carried out as required timing adjustment etc. in internal storage after, it is exported as data image signal DA from display control circuit 200, generated data clock signal SCK is as the signal of pulse corresponding to each pixel that comprises the image that represents with this data image signal DA, only become the signal of high level (H level) based on horizontal-drive signal HSY generated data initial pulse signal SSP conduct in specified time limit in every 1 horizontal scan period, generate grid initial pulse signal GSP (GSPa based on vertical synchronizing signal VSY, GSPb) as only become the signal of H level in specified time limit in every 1 image duration (1 vertical scanning period), generate gate clock signal GCK (GCKa based on horizontal-drive signal HSY, GCKb), latch gating signal LS and gate drivers output control signal GOE (GOEa based on horizontal-drive signal HSY and control signal Dc generation, GOEb).
In addition, display control circuit 200 possesses independent gamma correction handling part 21.Describe in the back independent gamma in detail and proofread and correct handling part 21.
As mentioned above, data image signal DA in the signal that generates in display control circuit 200, latch gating signal LS, data initial pulse signal SSP, data clock signal SCK and polarity upset signal POL and be input to source electrode driver 300, grid initial pulse signal GSP, gate clock signal GCK, gate drivers output control signal GOE are input to gate drivers 400.
Utilize source electrode driver 300 and gate drivers 400 to drive source electrode line SL1～SLn and the gate lines G L1～GLm of display part 100 as above-mentioned, thereby by the TFT10 that is connected with selected gate lines G Lj, pixel capacitance Cpix is applied voltage (i=1～n, the j=1～m) of source electrode line SLi.In each pixel forming portion 20, liquid crystal layer is applied the voltage corresponding with data image signal DA thus, control transit dose from the light of backlight 600 by applying this voltage, the image that the digital video signal Dv from the outside is represented is presented in display part 100.
As display mode, can enumerate sequential scanning (progressive scan) mode and staggered scanning (interlace scan) mode.Sequential scan mode is divided into frame upset driving and multi-thread upset drives.It is to make polarity upset carry out the type of drive of sequential scanning by every 1 image duration that the frame upset drives.It is the type of drive of carrying out sequential scanning by every a plurality of horizontal scanning period chien shih polarity upsets that multi-thread upset drives.
In addition, interlace mode is to become the mode of same group according to gate lines G L1～GLm with the line interval of regulation to be divided into a plurality of groups and in turn carry out modes to the scanning of each group.Interlace mode is generally distinguished, and can enumerate the upset of full frame interlace mode and piece and drive.The full frame interlace mode is the interleaved mode of carrying out take 1 picture as unit.Piece upset type of drive is that gate line is divided into a plurality of, carries out interleaved mode by every.
Detailed is as described below, but in above-mentioned any type of drive, all can produce above-mentioned demonstration inhomogeneous, and the present invention can use for above-mentioned any type of drive, and it is inhomogeneous to reduce its demonstration.
(generation and the countermeasure of horizontal stripe in piece upset type of drive)
Fig. 2 means the circuit diagram of the pixel forming portion 20 of display part 100.Pixel forming portion 20 is pixel forming portions that the point of crossing with gate lines G Li and source electrode line SLi arranges accordingly, forms green pixel G.In addition, the adjacent pixel forming portion 20 on the right of pixel forming portion 20 in the pixel forming portion 20 that namely arranges accordingly with the point of crossing of gate lines G Li and source electrode line SL (i+1), forms blue pixel B.
In addition, between the source electrode of the TFT10 of the drain electrode of the TFT10 of source electrode line SLi and source electrode line SLi, produce stray capacitance Csd
FromThe coupling that causes.And, produce stray capacitance Csd between the source electrode of the TFT10 of the drain electrode of the TFT10 of source electrode line SLi and source electrode line SL (i+1)
HeThe coupling that causes.
Therefore, the pixel capacitance Cpix that stray capacitance is included in consideration is represented by (1) formula as described below.
Cpix=Cpix '+Csd
From+ Csd
He(1)
At this, source electrode line SLi is made as source electrode line SL to the green pixel service voltage
G, source electrode line SL (i+1) is made as source electrode line SL to blue pixel service voltage
BIn addition, carrying out under the state that green intermediate grey scales evenly shows, the current potential of the drain D of the TFT10 before polarity upset is being made as V, the current potential of the drain D of the TFT10 after polarity upset is being made as V '.In this situation, (2) formula as described below is set up.
Cpix ' (V-Vcom)+Csd
From(V-V
SG1)+Csd
He(V-V
SB1)=Cpix ' (V '-Vcom)+Csd
From(V '-V
SG2)+Csd
He(V '-V
SB2) (2)
At this, the left side of (2) formula is the summation of the electric charge before polarity upset, and the right of (2) formula is the summation of the electric charge after polarity upset.
In addition, V
SG1Source electrode line SL before the expression polarity upset
GCurrent potential, V
SG2Source electrode line SL after the expression polarity upset
GCurrent potential, V
SB1Source electrode line SL before the expression polarity upset
BCurrent potential, V
SB2Source electrode line SL after the expression polarity upset
BCurrent potential.
The item that will comprise V and V ' in (2) formula merges to the left side, will comprise V
SG1, V
SG2, V
SB1And V
SB2Item merge to the right, derive (3) formula this moment.
Cpix ' (V-V ')+Csd
From(V-V ')+Csd
He(V-V ')=Csd
From(V
SG1-V
SG2)-Csd
He(V
SB2-V
SB1) (3)
Merge in (3) formula (V-V '), derive (4) formula.
(Cpix '+Csd
From+ Csd
He) (V-V ')=Csd
From(V
SG1-V
SG2)-Csd
He(V
SB2-V
SB1) (4)
In (4) formula both sides divided by (Cpix '+Csd
From+ Csd
He), derive (5) formula.
(V-V ')={ Csd
From(V
SG1-V
SG2)-Csd
He(V
SB2-V
SB1)/(Cpix '+Csd
From+ Csd
He) (5)
Source electrode line SL
GAmplitude voltage V
SGV
SG=V
SG1-V
SG2, source electrode line SL
BAmplitude voltage V
SBV
SB=V
SB2-V
SB1, the voltage variety V of the drain electrode of TFT10
SDV
SD=V-V '.In addition, the pixel capacitance Cpix that stray capacitance is included in consideration is represented by (1) formula.
When they being applied to (5) formula, obtain (6) formula.
V
SD=CSd
From/ Cpix * V
SG-Csd
He/ Cpix * V
SB(6)
Evenly show in the situation that carry out green intermediate grey scales, the voltage of drain electrode is with above-mentioned V
SDAmplitude change up and down with the polarity upset cycle.At this, with the voltage of drain electrode rise during be called same polarity during, be called during the voltage drop of drain electrode reversed polarity during.In this situation, in the vertical scanning period Vtotal of 1 frame, when the summation during reversed polarity is made as T, as the effective voltage reduction amount V of the effective value of the lower voltage amount of the drain voltage of TFT10
SDEObtained by (7) formula as described below.
V
SDE=V
SD* T/Vtotal={Csd
From/ Cpix * V
SG-Csd
He/ Cpix * V
SB} * T/Vtotal (7)
Like this, stray capacitance Csd
FromWith stray capacitance Csd
HeIn the interior generation of pixel forming portion 20, so source electrode line SL
GWith source electrode line SL
BThe voltage level of source signal voltage change, thus, effective voltage reduction amount V
SDEDifferent at each line.
(a) of Fig. 3 means source electrode line SL in piece upset type of drive
GWith source electrode line SL
BThe drain voltage D that causes of the variation of signal voltage
GThe sequential chart of variation.In same accompanying drawing, S
GSource electrode line SL
GSignal, S
BSource electrode line SL
BSignal.In addition, D
G1The drain voltage of the 1st line (the 1st row), D
G95It is the drain voltage of the 95th line (the 95th row).
Drain voltage D
G1Timing in (1) of Fig. 3 (a) is risen, and carries out the charging of pixel capacitance, keeps voltage.In addition, in (1) ' the timing polarity upset and descend, again carry out the charging of pixel capacitance, keep voltage.Therefore, in the time period of the vertical scanning period Vtotal=1200H of 1 frame (1200 line), maintenance is charged to the electric charge of the pixel capacitance of corresponding pixel forming portion 20.
Drain voltage D
G95Timing in (2) of Fig. 3 (a) is risen, and carries out the charging of pixel capacitance, keeps voltage.In addition, in (2) ' the timing polarity upset and descend, again carry out the charging of pixel capacitance, keep voltage.Therefore, with drain voltage D
G1Equally, in the time period of the vertical scanning period Vtotal=1200H of 1 frame (1200 line), maintenance is charged to the electric charge of the pixel capacitance of corresponding pixel forming portion 20.
Drain voltage D
G1With drain voltage D
G95Oblique line partly during above-mentioned reversed polarity.Signal S
GIn (1) ' timing descend, signal S
BIn (2) ' timing descend.Thus, as shown in the table of Fig. 3 (b), drain voltage D
G95With drain voltage D
G1Compare, grown 49H during reversed polarity.Therefore, drain voltage D
G95Effective value and drain voltage D
G1Effective value compare little.
Get back to (7) formula, the effective voltage reduction amount V of drain voltage
SDEDifferent for different lines, along with the summation T during reversed polarity is longer and larger.Therefore, the brightness value at each line place repeated to reduce and rise with the 48H cycle as shown in Figure 14, therefore produced the horizontal stripe of 48 distance between centers of tracks in showing green intermediate grey scales is monochromatic as shown in Figure 12.
Fig. 4 means in liquid crystal indicator the V-T performance plot to the relation that applies voltage Vg and transmissivity T of liquid crystal.As shown in same accompanying drawing, with respect to the variation that applies voltage Vg, transmissivity T changes zone greatly, and the zone that in other words the V-T slope of a curve is large is to be subjected to effective lower voltage amount V
SDEThe large zone of impact.
In order to prevent above-mentioned horizontal stripe, by increase source electrode line SL in (7) formula
BAmplitude voltage V
SBReduce the effective voltage reduction amount V of drain voltage
SDE, the luminance difference that reduces thus every line gets final product.Therefore the horizontal stripe that evenly shows according to green intermediate grey scales produces level, carries out independent gamma and proofreaies and correct.Represent below an example.
In the liquid crystal indicator of Fig. 1, carry out independent gamma and proofread and correct in the independent gamma that display control circuit 200 has is proofreaied and correct handling part 21.The following describes independent gamma proofreaies and correct.
Independent gamma is proofreaied and correct the wavelength dependency of V-T curve refer to be applied in order to compensate expression the relation of the voltage of liquid crystal layer and optical transmission rate, the gamma correction that each colour content is carried out separately.Namely, general gamma correction is to make the variation of input gray grade and the relation of the optical transmission rate of reality become suitable by input gray grade being set separately output gray level, and it is that independent gamma is proofreaied and correct that the colour content of RGB is carried out gamma correction independently of one another.
Fig. 5 represents the Sketch of independent gamma correction handling part 21.As shown in same accompanying drawing, independent gamma is proofreaied and correct handling part 21 and is possessed independent gamma LUT22.In addition, Figure 15 and Figure 16 represent the independent gamma object lesson of LUT22.As shown in same accompanying drawing, independent gamma LUT22 has set the table of the relation of input gray grade (being 0～255 gray level) and output gray level in the example of same accompanying drawing to each colour content of RGB.
Independent gamma is proofreaied and correct the view data (R, G, B) that handling part 21 is inputted the data of each colour content that comprises RGB, the view data before proofreading and correct as independent gamma.Independent gamma is proofreaied and correct data that handling part 21 extracts each colour content from the view data (R, G, B) of input as input gray grade, with reference to independent gamma LUT22, by each colour content definite output gray level separately.This each colour content output gray level separately is the view data (R ', G ', B ') of the view data after proofreading and correct as independent gamma and exporting.
At this, for example as shown in Figure 2, in the situation that in display part 100, green pixel G and blue pixel B are arranged side by side in the row direction according to this order, according to independent gamma LUT22 as shown in figure 15, carry out the independent gamma of B gray-scale value and proofread and correct, reduce thus the luminance difference of every line.More specifically, if the gray level of B is 0～4 (the 1st value), the gray level of the B ' after proofreading and correct equates without exception, is all 4 (the 1st values).
As mentioned above, produced the such show state of horizontal stripe in order to eliminate in piece upset type of drive, the gray-scale value of blue composition is proofreaied and correct and is proofreaied and correct by independent gamma as above.Thus, the luminance difference of every line diminishes, and therefore can be suppressed at green intermediate grey scales and evenly produce horizontal stripe in demonstration.In this situation, only just proofread and correct by independent gamma in the situation that the gray level of B be 0～4 with the gray level correction of B ' become equate without exception 4, therefore can suppress with simple structure the generation of horizontal stripe.
At this, in the situation that carry out correction as above, contrast can reduce, and degree of blackness can move to blue lateral deviation.Yet, identifiablely be that if the correction as shown in above-mentioned example, the reduction amount of contrast and the side-play amount of degree of blackness are fully in the scope of practicality, and be less on the impact of display quality.
In addition,, similarly carry out independent gamma and proofread and correct according to this order situation arranged side by side in the row direction for green pixel G in display part 100 and red pixel R, reduce the luminance difference of every line.In this situation, according to independent gamma LUT22 as shown in figure 16, carry out the independent gamma of R gray-scale value and proofread and correct, reduce thus the luminance difference of every line.More specifically, if the gray level of R is 0～4, the gray level of the R ' after proofreading and correct equates without exception, is all 4.Thus, according to this order situation arranged side by side in the row direction, also can suppress with simple structure the generation of horizontal stripe for green pixel G and red pixel R.
In addition, in above-mentioned example, supposing it is a source electrode line to be connected the structure of the pixel of identical colour content, but be not limited to this, can be also a source electrode line to be connected the structure of the pixel of mutually different a plurality of colour contents.In this structure, also can process to suppress by carrying out above-mentioned correction the generation of horizontal stripe as described above.
(generation and the countermeasure of horizontal stripe in frame upset type of drive)
In frame upset type of drive (source electrode line upset type of drive), overturn by 1 frame period polarity, according to the difference of the timing of gate turn-on, the effective voltage reduction amount V of drain voltage
SDEAlso different.Fig. 6 means source electrode line SL in frame upset type of drive
GWith source electrode line SL
BThe drain voltage D that causes of the variation of signal voltage
GThe sequential chart of variation.
In the sequential chart of Fig. 6, the drain voltage D of the 100th row
G100Drain voltage D with the 600th row
G600Be subject to reversed polarity impact during different, the drain voltage D of the 600th row
G600The drain voltage D of this side and the 100th row
G100Compare the impact that is subject to reversed polarity during long.Therefore by (7) formula, at the effective voltage reduction amount V of drain voltage
SDEIn, the drain voltage D of the 600th row
G600The drain voltage D of this side and the 100th row
G100Compare and want large.
Fig. 7 means the coordinate diagram that the effective value of drain voltage in frame upset type of drive changes by every line.Obtain the brightness value of each line by the effective value of calculating drain voltage for each line.
As described in Figure 7, in 1 image duration, the slow line of timing that scans, the effective value of drain voltage is less.Thus, brightness slowly reduces in 1 image duration.
Therefore, as shown in Figure 8, brightness slowly reduces in 1 image duration, but is gradual change ground demonstration in the picture that green intermediate grey scales evenly shows.
Also to improve source electrode line SL in (7) formula in this frame upset type of drive
BAmplitude voltage V
SB, reduce the effective voltage reduction amount V of the drain voltage of TFT10
SDEThe luminance difference that reduces every line gets final product.That is, process by carrying out above-mentioned correction, can be suppressed at the generation of the gradual change in picture.
In addition, in above-mentioned, represented the interleaved example of piece upset type of drive, but in the full frame interlace mode, same with above-mentioned frame upset type of drive, also can produce the inhomogeneous of gradual change take 1 picture as unit.Thus, in this situation, process by carrying out above-mentioned correction, also can be suppressed at the generation of the gradual change in picture.
(generation and the countermeasure of horizontal stripe in multi-thread upset type of drive)
For example make take 10 lines as the cycle during polarity upset carries out the type of drive of sequential scanning in multi-thread upset type of drive, according to the difference of the timing of gate turn-on, the effective voltage reduction amount V of drain voltage
SDEDifferent.Fig. 9 means source electrode line SL in multi-thread upset type of drive
GWith source electrode line SL
BThe drain voltage D that causes of the variation of signal voltage
GThe sequential chart of variation.
In the sequential chart of Fig. 9, the drain voltage D of the 1st row
G1Drain voltage D with the 10th row
G10Be subject to reversed polarity impact during be different, the drain voltage D of the 10th row
G10The drain voltage D of this side and the 1st row
G1Compare the impact that is subject to reversed polarity during to grow.Therefore by (7) formula, for the effective voltage reduction amount V of drain voltage
SDE, the drain voltage D of the 10th row
G10The drain voltage D of this side and the 1st row
G1Compare and want large.
Figure 10 means the coordinate diagram that the effective value of drain voltage in multi-thread upset type of drive changes by every line.About each line, obtain the brightness value of each line by the effective value of calculating drain voltage.
Therefore, the variation according to the effective value of as shown in figure 10 drain voltage is repeated periodically in the circulation that between 10 lines, brightness slowly reduces.Brightness reduction due to these every 10 lines as shown in figure 11, can produce the horizontal stripe of every 10 lines.
Also to improve source electrode line SL in (7) formula in this multi-thread upset type of drive
BAmplitude voltage V
SB, reduce the effective voltage reduction amount V of the drain voltage of TFT10
SDE, the luminance difference that reduces every line gets final product.That is, process by carrying out above-mentioned correction, also can suppress the generation of horizontal stripe.
(structure of television receiver)
Below, the example that liquid crystal indicator of the present invention is used for television receiver is described.Figure 17 means the block diagram of structure of the display device 800 of this TV receiver.This display device 800 possesses: y/c separation circuit 80, chroma video circuit 81, A/D converter 82, liquid-crystal controller 83, liquid crystal panel 84, backlight source driving circuit 85, backlight 86, microcomputer (Microcomputer) 87 and gray level circuit 88.In addition, above-mentioned liquid crystal panel 84 is panels corresponding with liquid crystal indicator of the present invention, comprise the pel array that comprises active array type display part, be used for to drive source electrode driver and the gate drivers of this display part.
In the display device 800 of said structure, at first, be input to y/c separation circuit 80 from the outside as the composite colour video signal Scv of TV signal, be separated into luminance signal and chrominance signal at this.These luminance signals and chrominance signal are transformed into the analog rgb signal corresponding with 3 primary colors of light in chroma video circuit 81, and this analog rgb signal is transformed into the digital rgb signal by A/D converter 82.This digital rgb signal is input to liquid-crystal controller 83.In addition, in y/c separation circuit 80, also take out horizontal-drive signal and vertical synchronizing signal from the composite colour video signal Scv from the outside input, these synchronizing signals also are input to liquid-crystal controller 83 by microcomputer 87.
Liquid-crystal controller 83 is based on digital rgb signal (suitable with above-mentioned digital video signal Dv) the output driver data-signal from A/D converter 82.In addition, liquid-crystal controller 83 generates for the timing controling signal that the interior source electrode driver of liquid crystal panel 84 and gate drivers and above-mentioned embodiment are similarly moved based on above-mentioned synchronizing signal, and these timing controling signals are applied to source electrode driver and gate drivers.In addition, in gray level circuit 88, generate colored 3 primary colors R, G, the B gray-scale voltage separately that shows, these gray-scale voltages are also supplied with liquid crystal panel 84.
In liquid crystal panel 84, based on these drivers data-signal, timing controling signal and gray-scale voltage, source electrode driver by inside and gate drivers etc. generate and drive with signal (data-signal, sweep signal etc.), drive with the display part color display of signal in inside based on these.In addition, show image in order to utilize this liquid crystal panel 84, need to be from the rear irradiation light of liquid crystal panel 84.In this display device 800, backlight source driving circuit 85 drives backlight 86 under the control of microcomputer 87, and thus, the back side of liquid crystal panel 84 is irradiated by light.
Comprise above-mentioned processing, the control of entire system is undertaken by microcomputer 87.In addition, as the vision signal (composite colour video signal) from the outside input, be not limited to based on the vision signal of televising, also can use the vision signal supplied with by the vision signal of camera with by the network electric wire etc., in this display device 800, can carry out showing based on the image of various vision signals.
In the display device 800 of said structure, in the situation that show based on the image of televising, as shown in figure 18, this display device 800 connects tuning 90.This tuning 90 channel signals that taking-up will receive from the reception signal (high-frequency signal) that is received by antenna (not shown) also is transformed into intermediate-freuqncy signal, takes out composite colour video signal Scv as TV signal by this intermediate-freuqncy signal being carried out detection.This composite colour video signal Scv is input to the display device 800 of having narrated, and is shown by this display device 800 based on the image of this composite colour video signal Scv.
Figure 19 means the exploded perspective view of an example of the physical construction when display device with said structure is as television receiver.In example as shown in figure 19, for television receiver, as its textural element, also have the 1st housing 801 and the 2nd housing 806 except above-mentioned display device 800, be to come the structure of clamping display device 800 in the mode that the 1st housing 801 and the 2nd housing 806 encase.In the 1st housing 801, the peristome 801a that formation sees through the image of demonstration in display device 800.In addition, the 2nd housing 806 is the housings that cover the rear side of display device 800, is provided with the behaviour's application circuit 805 for this display device 800 of operation, and below install and support use section material 808.
The invention is not restricted to the respective embodiments described above, can carry out various changes in the described scope of claim, in different embodiments respectively disclosed technical method suitably make up and during the embodiment that obtains is also included within the scope of technology of the present invention.
In addition, in this application for convenience of explanation, make column direction related with data signal line, make line direction related with scan signal line, but make picture rotate the 90 ° structures that form etc. not accommodating also comprising doubtfully.
Industrial utilizability
Liquid crystal indicator of the present invention can be applied to various display device such as the monitor of personal computer and television receiver.
Description of reference numerals
10:TFT; 20: the pixel forming portion; 21: independent gamma is proofreaied and correct handling part; 22: independent gamma LUT; 30: correcting circuit; 31: impact damper; 34: correcting value preservation section; 35: totalizer; The 80:Y/C separation circuit; 81: the chroma video circuit; The 82:A/D converter; 83: liquid-crystal controller; 84: liquid crystal panel; 85: backlight source driving circuit; 86: backlight; 87: microcomputer; 88: the gray level circuit; 90: tuning section; 100: display part; 200: display control circuit; 300: source electrode driver; 400: gate drivers; 600: backlight; 700: light source driving circuit; 800: display device; 801: the 1 housings; 801a: peristome; 805: behaviour's application circuit; 806: the 2 housings; 808: support to use section's material.
Claims (14)
1. data processing equipment, its image signal correction, described picture signal comprises a plurality of pixel datas of the liquid crystal panel of active array type being inputted from the outside, a plurality of data signal lines that the liquid crystal panel of described active array type possesses a plurality of scan signal lines of extending in direction, extend in another direction and a plurality of pixels that arrange accordingly with the cross part of said scanning signals line and above-mentioned data signal line, above-mentioned data processing equipment is characterised in that:
Possesses the correction handling part, described correction handling part
Obtain the pixel data of the 2nd pixel of, demonstration that carry out blue composition or red composition that drive by the data signal line adjacent with the 1st pixel of the demonstration of carrying out green composition,
In the situation that the represented gray-scale value of the pixel data of above-mentioned the 2nd pixel is from 0 to the value the 1st value of regulation, this gray-scale value is corrected into above-mentioned the 1st value.
2. data processing equipment according to claim 1 is characterized in that:
Above-mentioned correction handling part is that the independent gamma that carries out the gamma correction that the pixel data to each included colour content of above-mentioned picture signal carries out is respectively independently proofreaied and correct handling part.
3. data processing equipment according to claim 2 is characterized in that:
Also possess the correcting value storage part, above-mentioned correcting value storage part is preserved the correcting value data corresponding with the combination of the value of the pixel data of above-mentioned each colour content and the value after gamma correction, and above-mentioned correction handling part is proofreaied and correct by the above-mentioned correcting value storage part of reference.
4. liquid crystal indicator is characterized in that possessing:
The liquid crystal panel of active array type, a plurality of data signal lines that it possesses a plurality of scan signal lines of extending in direction, extend in another direction and a plurality of pixels that arrange accordingly with the cross part of said scanning signals line and above-mentioned data signal line;
The sweep signal drive division, its gate turn-on pulse that will make the said scanning signals line be in selection mode is applied to the said scanning signals line successively;
The data-signal drive division, it is to be applied to above-mentioned data signal line with the mode of polarity upset with data-signal by a plurality of horizontal period of the every regulation in 1 image duration; And
Data processing equipment claimed in claim 1.
5. liquid crystal indicator according to claim 4 is characterized in that:
Also possesses display control circuit, above-mentioned display control circuit receives the picture signal that comprises from a plurality of pixel datas of outside input, the signal and the picture signal that will supply with above-mentioned data-signal drive division of the action of said scanning signals drive division and above-mentioned data-signal drive division controlled in output
Above-mentioned data processing equipment is that above-mentioned display control circuit possesses.
6. liquid crystal indicator according to claim 4 is characterized in that:
Above-mentioned data-signal drive division carries out polarity upset and drives, and with a kind of polarity continue during be made as a plurality of horizontal scan period.
7. liquid crystal indicator according to claim 6 is characterized in that:
The said scanning signals line is divided into the piece more than 1, and the included scan signal line of each piece is further divided into a plurality of groups,
The said scanning signals drive division is take above-mentioned as unit sequence scanning said scanning signals line, and in the scanning of each piece, by carrying out that successively the driving of interlace mode is carried out in scanning of each group of said scanning signals line,
Above-mentioned data-signal drive division is applied to above-mentioned data signal line in the mode of the polarity upset of naming a person for a particular job in the switching time of the group of the said scanning signals line that scans with data-signal.
8. liquid crystal indicator according to claim 7 is characterized in that:
The quantity of cutting apart the piece of said scanning signals line is one.
9. liquid crystal indicator according to claim 7 is characterized in that:
The quantity of cutting apart the piece of said scanning signals line is more than two.
10. liquid crystal indicator according to claim 6 is characterized in that:
The said scanning signals line is divided into the piece more than 1,
The said scanning signals drive division carries out the driving of sequential scan mode to the said scanning signals line,
Above-mentioned data-signal drive division is applied to above-mentioned data signal line in the mode of the polarity upset of naming a person for a particular job in the switching time of the group of the said scanning signals line that scans with data-signal.
11. liquid crystal indicator according to claim 10 is characterized in that:
The quantity of cutting apart the piece of said scanning signals line is one.
12. liquid crystal indicator according to claim 10 is characterized in that:
The quantity of cutting apart the piece of said scanning signals line is more than two.
13. a television receiver is characterized in that:
Possesses liquid crystal indicator claimed in claim 4; With
The tuning section that reception is televised.
14. data processing method, be used for image signal correction, described picture signal comprises a plurality of pixel datas of the liquid crystal panel of active array type being inputted from the outside, a plurality of data signal lines that the liquid crystal panel of described active array type possesses a plurality of scan signal lines of extending in direction, extend in another direction and a plurality of pixels that arrange accordingly with the cross part of said scanning signals line and above-mentioned data signal line, above-mentioned data processing method is characterised in that to have:
Obtain the step of pixel data of the 2nd pixel of, demonstration that carry out blue composition or red composition that drive by the data signal line adjacent with the 1st pixel of the demonstration of carrying out green composition; With
In the situation that the represented gray-scale value of the pixel data of above-mentioned the 2nd pixel is from 0 to the value the 1st value of regulation, this gray-scale value is corrected into the step of above-mentioned the 1st value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310128828.0A CN103268759B (en) | 2008-09-16 | 2009-06-24 | Data processing equipment, liquid crystal indicator, television receiver and data processing method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008-236910 | 2008-09-16 | ||
| JP2008236910 | 2008-09-16 | ||
| PCT/JP2009/061522 WO2010032528A1 (en) | 2008-09-16 | 2009-06-24 | Data processing apparatus, liquid crystal display apparatus, television receiver, and data processing method |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310128828.0A Division CN103268759B (en) | 2008-09-16 | 2009-06-24 | Data processing equipment, liquid crystal indicator, television receiver and data processing method |
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| CN102105928A CN102105928A (en) | 2011-06-22 |
| CN102105928B true CN102105928B (en) | 2013-05-22 |
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| CN201310128828.0A Expired - Fee Related CN103268759B (en) | 2008-09-16 | 2009-06-24 | Data processing equipment, liquid crystal indicator, television receiver and data processing method |
| CN200980129303.0A Expired - Fee Related CN102105928B (en) | 2008-09-16 | 2009-06-24 | Data processing apparatus, liquid crystal display apparatus, television receiver, and data processing method |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310128828.0A Expired - Fee Related CN103268759B (en) | 2008-09-16 | 2009-06-24 | Data processing equipment, liquid crystal indicator, television receiver and data processing method |
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| US (1) | US9093018B2 (en) |
| EP (1) | EP2325834A4 (en) |
| JP (1) | JP5154651B2 (en) |
| CN (2) | CN103268759B (en) |
| BR (1) | BRPI0917305A2 (en) |
| RU (1) | RU2457552C1 (en) |
| WO (1) | WO2010032528A1 (en) |
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| US9984644B2 (en) * | 2012-08-08 | 2018-05-29 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and method for driving the same |
| CN103366683B (en) * | 2013-07-12 | 2014-10-29 | 上海和辉光电有限公司 | Pixel array, display and method for displaying image on display |
| CN104078026B (en) * | 2014-07-17 | 2016-06-08 | 深圳市华星光电技术有限公司 | Liquid crystal indicator and driving method thereof |
| CN105069453B (en) * | 2015-08-12 | 2019-03-05 | 青岛海信电器股份有限公司 | A kind of method for correcting image and device |
| CN107742508B (en) * | 2017-11-03 | 2020-02-07 | 惠科股份有限公司 | Driving method and driving device of display device |
| CN108320719B (en) * | 2018-02-28 | 2021-01-15 | 京东方科技集团股份有限公司 | Pixel charging method, display panel and display device |
| US11004398B2 (en) * | 2018-11-20 | 2021-05-11 | Innolux Corporation | Electronic device |
| JP7239460B2 (en) * | 2019-12-24 | 2023-03-14 | パナソニック液晶ディスプレイ株式会社 | Image processing device and liquid crystal display device |
| CN113450713B (en) * | 2020-03-25 | 2022-08-12 | 北京小米移动软件有限公司 | Screen display method and device and gray scale mapping information generation method and device |
| CN114093298B (en) * | 2021-11-24 | 2024-04-05 | 武汉京东方光电科技有限公司 | Configuration method and device of display device, storage medium and electronic device |
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Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0917305A2 (en) | 2015-11-17 |
| JPWO2010032528A1 (en) | 2012-02-09 |
| US20110149165A1 (en) | 2011-06-23 |
| EP2325834A1 (en) | 2011-05-25 |
| EP2325834A4 (en) | 2012-03-28 |
| WO2010032528A1 (en) | 2010-03-25 |
| JP5154651B2 (en) | 2013-02-27 |
| RU2457552C1 (en) | 2012-07-27 |
| CN103268759A (en) | 2013-08-28 |
| CN102105928A (en) | 2011-06-22 |
| US9093018B2 (en) | 2015-07-28 |
| CN103268759B (en) | 2016-04-20 |
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